Computer Security and Cryptography

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1.4 SIDE INFORMATION

Side information about ciphertext is any information relating to the content of the plaintext. The following puzzle asks you to unravel each of the words, where the letters have been rearranged.

                    DFOR     KIBUC     TECRELOHV     DONSHU
                    KADCRAP  GEDOD     LADCLIAC      NOCILLN

A solution to the puzzle is easy using the side information provided (Fig. 1.5), that the words are names of automobiles! Has anyone seen a Hudson SUV lately?

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